In Ansible 1.7, I can use --tags from the command-line to only run a subset of that playbooks tasks.
But I\'m wanting to bake into my playbook to run a set of roles wit
You only have the following options with the current version of Ansible:
This feature request has come up on the mailing list a few times and I haven't seen any indication from the dev team that it will be added as a new feature.
The use of conditionals can meet your needs.
You can see more information in my answer to another person's similar question here.